Fixing method of large-size pipeline branch release valve

The invention discloses a fixing method for a large-size pipeline branch release valve, and relates to the technical field of ocean engineering. Comprising a large-size line pipe and a discharge valve fixedly installed on the large-size line pipe, pipeline holding clamps are fixedly installed on the large-size line pipe and located on the two sides of the discharge valve respectively, a flange holding clamp is fixedly installed on the discharge valve, and the pipeline holding clamps are fixedly connected with the flange holding clamp. By means of the fixing method, external force generated in the operation process of the release valve can be transmitted to the large-size line pipe through the flange embracing clamp, the lug plate connecting piece and the pipeline embracing clamp, so that weak points of welding openings among the large-size line pipe, the pipe base and the connecting flange are prevented from being damaged by the external force, and the number of welding openings in the operation process of th